<code>defaultConnectionPoint</code> - a connection point function that is used by links if no <code>connectionPoint</code> property is defined for a link end. It can either be an object or a function. JointJS provides a collection of <a href="#connectionPoints">built-in connection point functions</a> in the <code>joint.connectionPoints</code> namespace; alternatively, a <a href="#connectionPoints.custom">custom function</a> may be provided. See the <a href="#dia.Link.geometry.connectionPoint">link geometry connectionPoint documentation</a> for more information.
